JPS61147510A - Clamper using permanent magnet - Google Patents

Abstract

PURPOSE:To maintain the attracting engagement against the movement of mounting surface by clamping a pair of clampers via inlaid holes on the mounting surface at one position to allow it to tilt. CONSTITUTION:A ferromagnetic member 2 attracted and mounted on one pole (a) of a permanent magnet 1, and a ferromagnetic member 3 contacted with the other pole (b) are detachably attracted through a hole 1a. In this case, both or one nonattracting surfaces 2b, 3b of the members 2, 3 are coated by plastic nonmagnetic material 4. The nonmagnetic material 4 is raised substantially at the center of the surfaces 2b, 3b to pass yarn inlaid holes 5a, 6a of raised nonmagnetic members 5, 6. Then, the direction of the attracting surface is not constant, but can be tilt freely. Thus, the attracting surfaces of the clampers A, B are correctly opposed to be strongly engaged.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stop using a permanent magnet for use in seat covers, etc. of seats.

(Prior art) Stops using permanent magnets are widely used as stops for bangs, etc. because they are easy to operate.
For example, as shown in FIG. 7, a permanent magnet (1) has a through hole (1) a extending from one magnetic pole surface a to the other magnetic pole surface b.
The protruding ring part (2) a of the ferromagnetic member (2) fixedly attached to one magnetic pole surface a, and the protruding ring part (3) of the ferromagnetic member (3) abutting on the other magnetic pole surface b. The fasteners (1) and (a) are detachably adsorbed through the through-hole (1) a, and the fasteners are fastened to the mounting fabric by caulking the fasteners (1) and (11), respectively. (l2) is fixed and the leg pieces (11)a and (12)a formed integrally with this are bent and attached.

(Problem to be Solved by the Invention) However, in such a fastener, the leg pieces are integrally fixed to the fastener, and the leg piece is fixed by inserting a pair of leg pieces into the mounting fabric. Yes, if a hole is made in the mounting fabric and the fabric surface is damaged, one end of the mounting fabric is pushed and bent, or a force is applied in the direction of pushing open the mounting fabric to which the fastener is attached, the suction surface There were problems such as lever-like force acting on the material and the adhesion being likely to come off.

(Means for Solving the Problems) The present invention was provided to solve the above problems, and its purpose is to provide a fastener that is attached to the fabric at one location in the center of the back surface and can be tilted freely. It is designed to maintain suction engagement even when the fabric surface moves, and to be able to be fixed without drilling holes in the mounting fabric. A ferromagnetic member (2) is attached to one magnetic pole surface a of a permanent magnet (1) having a hole (1) a extending from one magnetic pole surface a to the other magnetic pole surface. The ferromagnetic member (3
) is removably attracted through the hole (1) a, and the non-adsorbing surface of both or one of the ferromagnetic members (2) and (3) is made of a plastic non-adhesive material. The gist of this structure is that the non-magnetic material is covered with a magnetic material, and the non-magnetic material in the substantially central part of the non-adsorption surface is raised, and a thread cover hole is provided through the raised non-magnetic material part. Considerable design changes are planned in conjunction with this.

(Example) Examples of the present invention will be described below with reference to the drawings. Figure 1 shows a pair of stops A and B that use permanent magnets (1). In stopper A, the permanent magnet (1) is a sintered magnet such as a ferrite magnet, a steel bar magnet, a plastic magnet, or It is made of a rare earth magnet, etc., and has a hole (1) a extending from one magnetic pole surface a to the other magnetic pole surface a, especially when an attractive force is required. , a disc-shaped central part with a length that reaches the middle of the hole (1) a of the permanent magnet (1), and a protruding part (2) with an outer diameter that does not touch the circumferential surface of the hole (1) a.
) A is integrally formed with a ferromagnetic member (2) attached by adsorption, and the non-adsorption surface (2) b and the hole (1) of the permanent magnet (1)
) The outer surface other than a is made of non-magnetic material such as synthetic resin or non-ferrous metal (
4), the non-magnetic material (4) at approximately the center of the non-attractive surface (2)b is raised, and the raised portion (5) is provided with a drilled hole (5)a. Also, the stop B has a non-adsorption surface ( 3
) b and the peripheral edge thereof are covered with a non-magnetic material (4°), the non-magnetic material (4°) approximately in the center of the non-adsorption surface (3) b is raised, and a hole is drilled into the raised part (6). (6) A is provided through the hole.

Figure 2 shows the ferromagnetic member (2) in the stopper A in Figure 1.
) of the ferromagnetic member (3) is not provided so that the protrusion part (3) a of the ferromagnetic member (3) in the stopper B reaches the surface of the ferromagnetic member (2) when the stopper A is engaged. Fig. 3 shows the ferromagnetic member (
3) is not provided; in this case, the peripheral edge of the non-magnetic material (4') of the stopper B is used instead of the protruding part (3) a, which also serves as a guide to the engagement position. is made to protrude beyond the attraction surface of the ferromagnetic member (3) to prevent the attraction position from shifting when engaged with the stopper A. Figure 4 shows the ferromagnetic members (2) and (3) in Figure 1 as ferromagnetic plates (2') and (3') respectively.
) and ferromagnetic parts (2") and (3"), and the ferromagnetic plate (2"
°) and (3°), and a ferromagnetic magnetic shield plate (7) is attached to the magnetic pole face of the permanent magnet (1) and covered with a non-magnetic material (4). and non-magnetic material (
The peripheral edge part (4)a of 4) is provided to protrude in the direction of engagement with the stopper B, and guides the stopper B to the suction position for reliable retention, and also serves to securely hold the stopper B on the magnetic recording surface of a magnetic card, etc. This prevents the magnetic recording material from coming into direct contact with the engaging and attracting surface, thereby preventing the magnetic recording from being destroyed.

Therefore, the coating with the above-mentioned non-magnetic material (4) is the non-magnetic material (4).
In the case of synthetic resins, which are mainly used, injection molding is carried out, and in the case of non-ferrous metals, which are occasionally used, it is carried out by die-casting, and permanent magnets (1) or ferromagnetic members (2) or (3) are used. Since this can be done by inserting these parts, there is no need to damage them during assembly as in the conventional example.

Figure 5 shows that a magnetic shield plate (7) is attached to the magnetic pole face of the permanent magnet (1) at the stop A.7. A non-magnetic material (4) is used to cover only the non-adsorbing surface (2)b of the ferromagnetic member (2) and the outer circumferential surface of the permanent magnet (+), and a locking edge (4)b is provided to secure the magnetic shield plate (7). This shows one in which the periphery is fixed, and has the feature that a permanent magnet (1) etc. can be inserted using the flexibility of the non-magnetic material (4).

(Function) As shown in Fig. 6, the fastener shown in "-" is fixed at one place on the mounting fabric C by threading holes (5) & and (6)a, and its engaging suction surface The direction of the stoppers A and H is not fixed and can be freely swung, so that the suction surfaces of the stops A and H properly face each other and are strongly engaged. In addition, even if the mounting fabrics C and C try to separate, they will not tilt together with the fabric surface, so no lever-like force will be applied to the engagement and attraction surface of the stopper, making it possible to maintain a reliable engagement and attraction state. It is.

(Effects) As described above, the present invention provides a ferromagnetic member ( 2) and a ferromagnetic member (3) that is in contact with the other magnetic pole face are removably attracted to each other through the hole (1) a. ) or (3), the non-attractive surface of either or both is covered with a plastic non-magnetic material, and the non-magnetic material at approximately the center of the non-attractive surface is raised, and a thread is attached to the raised non-magnetic material portion. Since the structure is such that the overlocking holes are provided through them, the pair of fasteners A and B are fixed to each mounting fabric at one place through the overlocking holes, so they can swing freely, and the mounting fabric can be tilted or Even when the two-piece fabric moves in the separating direction, no lever-like prying force acts on the suction surface, the suction force does not weaken, and the suction engagement state is maintained.

In addition, since it can be attached to fabric by threading without making holes, it can be used not only as a fastener for seat covers, table covers, sofa covers, etc., but also as buttons for clothes, etc.

Furthermore, since it is coated with a plastic material and assembled, it has the advantage that permanent magnets etc. will not be damaged during assembly.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing an embodiment of the fastener according to the present invention, Figs. 2 to 5 are sectional views of various other embodiments, Fig. 6 is a side view showing the attached state, and Fig. 7. is a sectional view of a conventional example. l...Permanent magnet, 2.3...Ferromagnetic member, 4...
Non-magnetic material, 5.6... Raised portion, 5a, 6a... Overcast hole, 7... Magnetic shield plate, a, b... Magnetic pole surface.

Claims (1)

[Claims] Hole (1) a from one magnetic pole surface a to the other magnetic pole surface b
A ferromagnetic member (2) is attached to one magnetic pole surface a of the permanent magnet (1) by attraction, and a ferromagnetic member (3) is in contact with the other magnetic pole surface b of the permanent magnet (1). The ferromagnetic member (2) is attached to the stopper which is detachably attracted through the
or (3), both or one of the non-attractive surfaces are covered with a plastic non-magnetic material, and the non-magnetic material at approximately the center of the non-attractive surface is raised, and a thread is attached to the raised non-magnetic material portion. A stop using a permanent magnet, characterized by having a hole inserted through it.